Hopanoids - Study guides, Class notes & Summaries

MCB 3020 Exam 1 Questions and Answers 100% VerifiedMCB 3020 Exam 1 Questions and Answers 100% VerifiedMCB 3020 Exam 1 Questions and Answers 100% VerifiedMCB 3020 Exam 1 Questions and Answers 100% VerifiedMCB 3020 Exam 1 Questions and Answers 100% Verified A chemical bond formed by two atoms when they share pairs of electrons to fill their outer shells is a/an : A. Ionic bond B. Covalent bond C. Hydrophilic interaction D. Hydrogen bond E. Organic bond - ANSWER - B. Covalent bond Whic...

MCB 3020 Exam 1 Questions And Answers 100% Correct A chemical bond formed by two atoms when they share pairs of electrons to fill their outer shells is a/an : A. Ionic bond B. Covalent bond C. Hydrophilic interaction D. Hydrogen bond E. Organic bond B. Covalent bond Which of the following would a bacterium NOT have? A. Mitochondria B. Ribosome C. DNA D. Cell membrane A. Mitochondria Which of the following structures adds flexibility and fluidity to prokaryotic cell membranes? ...

MICR 271 EXAM QUESTIONS WITH ALL REVISED ANSWERS O-Antigen in lipopolysaccharide - Answer-may contain hundreds of repeating units that are species specific - external to the cell, accessible for interactions with immune cells Core in lipopolysaccharide - Answer-formed by an array of sugars including ketodeoxyoctonate - inner core is external to the membrane, but close to the surface of the cell - cross links ionically with other components of the membrane Lipid A in lipopolysaccharide...

What are the two types of microbial cells? - Answer-Prokaryotic and eukaryotic What is the 3 domains that are based on the comparison of rRNA? - Answer--Bacteria -Archaea -Eukarya B.A.E. Domain Bacteria - Answer-Has: -peptidoglycan -can have plasmids -Can perform Horizontal Gene transfer (HGT) -Beta (1,4) Glycosidic -Hopanoids -Nucleoid -Can be Gram (+) or (-) -Lacks a membrane-bound nucleus Domain Archaea - Answer-Has: -Unique rRNA -Can have monolayer or bilayer plas...

B-lactam resistance - Lactamases - enzymes that cleave beta lactam structure usually between carbon and nitrogen - makes it no longer a structural mimic and transpeptidase keeps cross-linking peptide side chains Antimicrobial Agents - Agents that kill microorganisms or inhibit their growth -cidal agents kill -static agents inhibit growth Household cleaners are disinfectants 14 out of 20 burn patients get pseudomonas infections from stainless steel tub cleaned with a quat.. why? - Quats d...

The genus of bacteria that undergoes cell division in random planes, forming grapelike clusters of round bacteria, are the _______________. Ans: staphylococci or staphylococcus Bacteria that do not have a fixed shape are said to be ___________. Ans: pleomorphic A branched network of hyphae formed by the Actinomycetes is called a ______________. Ans: mycelium Actinomycetes form long filaments called ___________. Ans: hyphae Sterol-like molecules called hopanoids are thought to be import...

Microbiology Final Exam questions with solutions The genus of bacteria that undergoes cell division in random planes, forming grapelike clusters of round bacteria, are the _______________. ️️staphylococci or staphylococcus Bacteria that do not have a fixed shape are said to be ___________. ️️pleomorphic A branched network of hyphae formed by the Actinomycetes is called a ______________. ️️mycelium Actinomycetes form long filaments called ___________. ️️hyphae Sterol-li...

MICR 2123 Test Questions with Complete Solutions All Revised and Updated separation is the final step in what cellular process - Answer-Cell division the process of chemotaxis typically requires a bacterium to have what two features - Answer-chemoreceptors and motility a bacterial membrane will have a decreased fluidity by the insertion of _____ into that membrane - Answer-Hopanoids cytoplasmic membrane is primarily composed of: - Answer-Phospholipids and proteins gram-positive c...

chemo (chemo/photo) obtain energy from chemical compounds (bond breaking) photo (chemo/photo) obtain energy from sunlight organo (organo/litho) get energy/electrons from organic source Litho (organo/litho) get energy/electrons from inorganic source Auto (auto/hetero) use inorganic carbon (CO2) Hetero (auto/hetero) use organic carbon Hopanoids A planar molecule that fills gaps between fatty acid chains in a bacterial membrane planar H...

The amphipathic molecules that form the cell membranes are made of phospholipids. The basic structure of these phospholipids consists of 3 parts, the hydrophilic ethanolamine, the glycerol and the long non polar hydrophobic fatty acids. The glycerol molecule is linked to the fatty acids by different chemical bonding in Bacteria and Archaea. Which of the following sentences correctly described the chemical bonds present in the membranes of the microorganisms so far studied? a. The glycerol mol...